RPS 500 www.vishay.com Vishay Sfernice Power Resistor for Mounting onto a Heatsink Thick Film Technology FEATURES • High power rating: 500 W • High overload capability up to 2 times rated power (see energy curve) • Heatsink mounting • Low thermal radiation of the case • Material categorization: for definitions of compliance please see www.vishay.com/doc?99912 This range has been developed specifically for electrical traction applications and is capable of dissipating 500 W at +70 °C. The remarkable performance characteristics are evident when used in severe pulse conditions. The copper base allows easy mounting on the heatsink and provides optimal dissipation conditions. DIMENSIONS in millimeters RPS 500D RPS 500A 73 56 10.5 73 56 10.5 6 26 ± 1 33.5 16.2 6 28 ± 1 57 57 18.7 60 Ø 7.2 60 Ø 7.2 35.8 Ø 4.2 2 x M4 useful depth: 6 Ø 21 38.1 Ø 4.2 2 x M4 useful depth: 6 Ø 21 Note • Tolerances unless stated: ± 0.2 mm. STANDARD ELECTRICAL SPECIFICATIONS MODEL SIZE RESISTANCE RANGE Ω RATED POWER P25 °C W LIMITING ELEMENT VOLTAGE UL V TOLERANCE ±% TEMPERATURE COEFFICIENT ± ppm/°C RPS 500 500 0.24 to 1M (1) 500 5000 1, 2, 5, 10 150 Note (1) E24 series. MECHANICAL SPECIFICATIONS Mechanical Protection Resistive Element Substrate End Connections Weight Tightening Torque on Connections Tightening Torque on Heatsink TECHNICAL SPECIFICATIONS Insulated case and resin for potting UL 94 V-0 Cermet Alumina onto base of nickel coated copper Screws M4 (M5 on request) 250 g ± 10 % Rated Power (P70) Chassis Mounted at 70 °C (Case Temperature) 500 W continuous load Thermal Resistance of the Component Rth (j - c): 0.11 °C/W Temperature Coefficient 2 Nm Dielectric Strength 4 Nm ENVIRONMENTAL SPECIFICATIONS Insulation Resistance Temperature Range Inductance Flammability Revision: 17-Dec-15 -55 °C to +125 °C ± 300 ppm/°C < 1 Ω ± 150 ppm/°C > 1 Ω L: 7 kVRMS - H: 12 kVRMS MIL STD 202 Method 301: 1 min/10 mA max. > 106 MΩ under Uins = 500 VDC IEC 60115-1 < 50 nH IEC 60695-11-5 2 applications 30 s separated by 60 s Document Number: 50047 1 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 RPS 500 www.vishay.com Vishay Sfernice PERFORMANCE TESTS CONDITIONS REQUIREMENTS EN 60115-1 2 Pr / 10 s UL = 5000 V < ± (0.25 % + 0.05 Ω) IEC 60115-1 / IEC60068-2-14 Test Na 5 cycles, -55 °C to +125 °C < ± (0.25 % + 0.05 Ω) IEC 60115-1 Pr (i.e. 500 W) / 1000 h / 70 °C (no cycling) (1) < ± (0.5 % + 0.05 Ω) MIL STD 202 Method 103 B and D 56 days, 95 % RH / 40 °C < ± (0.5 % + 0.05 Ω) Momentary Overload Rapid Temperature Change Load Life Humidity (Steady State) Note (1) Resistors are not tested and guaranteed in cycling conditions. RESISTANCE VALUE IN RELATION TO TOLERANCE AND TCR <1Ω Resistance Values >1Ω Standard Tolerances ±5% Standard TCR (-55 °C to +125 °C) ± 300 ppm/°C Tolerance on Request ± 150 ppm/°C ± 1 %, ± 2 %, 10 % RECOMMENDATIONS FOR MOUNTING ONTO A HEATSINK • Surfaces in contact must be carefully cleaned. • The heatsink must have an acceptable flatness: From 0.05 mm to 0.1 mm/100 mm. • Roughness of the heatsink must be around 6.3 μm. In order to improve thermal conductivity, surfaces in contact (alumina, heatsink) are coated with a silicone grease (type Sl 340 from Rhône-Poulenc or Dow 340 from Dow Corning). • The fastening of the resistor to the heatsink is under pressure control of two screws tightened at 4 Nm for full power availability. RPS 500 Tightening Torque on Heatsink 4 Nm • The following accessories are supplied with each product: 2 off CHC M4 x 16/16 class 8.8 for heatsink mounting, 2 off TH M4 x 6/6 and 2 M4 contact lock washers for connections. CHOICE OF THE HEATSINK The user must choose according to the working conditions of the component (power, room temperature). Maximum working temperature must not exceed 125 °C. The dissipated power is simply calculated by the following ratio: ΔT P = ----------------------------------------------------------------------------------------------------[ R th (j - c) ] + [ R th (c - h) ] + [ R th (h - a) ] P: Expressed in W ΔT: Difference between maximum working temperature and room temperature Rth (j - c): Thermal resistance value measured between resistive layer and outer side of the resistor. It is the thermal resistance of the component: 0.11 °C/W. Rth (c - h): Thermal resistance value measured between outer side of the resistor and upper side of the heatsink. This is the thermal resistance of the interface (grease, thermal pad), and the quality of the fastening device. Rth (h - a): Thermal resistance of the heatsink. Revision: 17-Dec-15 Document Number: 50047 2 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 RPS 500 www.vishay.com Vishay Sfernice OVERLOADS POWER RATING Short time overload: 2 Pr/10 s Accidental overload: The values indicated in the graph below are applicable to resistors in air or mounted onto a heatsink. The heatsink temperature should be maintained at the values specified in fig. 2. To optimize the thermal conduction, contacting surfaces should be coated with silicone grease and heatsink mounting screws tightened to 4 Nm. MARKING 100 RATED POWER IN % Model, style, resistance value (in Ω), tolerance (in %), manufacturing date, Vishay Sfernice trademark. ENERGY CURVE ENERGY IN JOULES 10 000 1000 100 80 60 40 20 10 0 0 1 20 40 60 80 100 120 140 HEATSINK TEMPERATURE IN °C 0.1 10-7 10-6 10-5 10-4 10-3 10-2 10-1 100 PACKAGING OVERLOAD DURATION IN s Box of 15 units POWER CURVE 10 000 000 POWER IN W 1 000 000 100 000 10 000 1000 10-7 10-6 10-5 10-4 10-3 10-2 10-1 100 OVERLOAD DURATION IN s Revision: 17-Dec-15 Document Number: 50047 3 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 RPS 500 www.vishay.com Vishay Sfernice ORDERING INFORMATION RPS 500 DH 100 kΩ ± 10 % xxx BO15 e MODEL STYLE CONNECTIONS optional H: dielectric strength 12 kV L: dielectric strength 7 kV RESISTANCE VALUE TOLERANCE CUSTOM DESIGN optional on request: special TCR, shape etc. PACKAGING LEAD (Pb)-FREE ±1% ±2% ±5% ± 10 % GLOBAL PART NUMBER INFORMATION R GLOBAL MODEL RPS500 P S 0 5 0 0 D H 4 7 R 0 J B STYLE DIELECTRIC OHMIC VALUE TOLERANCE PACKAGING SPECIAL D = diagonal connections A = straight connections H: dielectric strength 12 kV L: dielectric strength 7 kV The first four digits are significant figures and the last digit specifies the number of zeros to follow. R designates decimal point. 48R70 = 48.7 Ω 47R0 = 47 Ω 1001 = 1 kΩ 4R70 = 4.7 Ω R240 = 0.24 Ω F=1% G=2% J=5% K = 10 % B = box 15 pieces N = box 15 pieces N/A (1 to 14 pieces by box) As applicable ZAx. RELATED DOCUMENTS APPLICATION NOTES Potentiometers and Trimmers www.vishay.com/doc?51001 Guidelines for Vishay Sfernice Resistive and Inductive Components www.vishay.com/doc?52029 Revision: 17-Dec-15 Document Number: 50047 4 For technical questions, contact: [email protected] THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 Legal Disclaimer Notice www.vishay.com Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product. 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We confirm that all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU. Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21 conform to JEDEC JS709A standards. Revision: 02-Oct-12 1 Document Number: 91000